There are five
terms in AP. The sum of these
terms is 55 and
the
fourth
term is five more
than the sum of the first two terms. Find the
Tenth term of the AP.
Answers
Answered by
3
Step-by-step explanation:
n= 5
Sn = 55
n/2 (2a + (n-1)d) = 55
5/2 ( 2a + 4d) = 55
1/2(2a + 4d) = 11
a + 2d = 11
a4 = a + a2 + 5
a + 3d = a + a + d + 5
a + 3d = 2a + d + 5
2d = a + 5
Similar questions